Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Jacek Grams"'
Autor:
Katarzyna Nawrotek, Jacek Grams, Robert Sobczyk, Monika Kubicka, Beata Czeladzińska, Piotr Jóźwiak
Publikováno v:
Polymer Testing, Vol 123, Iss , Pp 108061- (2023)
Chitosan-hydroxyapatite tubular-shaped hydrogel structures have been successfully obtained by electrophoretic deposition. The deposits show great potential in the regeneration of tubular organs and tissues, in particular peripheral nerve tissue engin
Externí odkaz:
https://doaj.org/article/0738ff5a866a4241ad915b36922f2a77
Autor:
Jacek Grams
Publikováno v:
Energies, Vol 16, Iss 1, p 72 (2022)
Due to limited fossil fuel reserves, the global political situation, and progressive environmental pollution, the development of new methods of hydrogen production is highly demanded [...]
Externí odkaz:
https://doaj.org/article/71d1210bc90842f6adc3e37660e96898
Autor:
Katarzyna Nawrotek, Jacek Grams
Publikováno v:
Materials, Vol 14, Iss 5, p 1288 (2021)
Tubular-shaped hydrogel structures were obtained in the process of cathodic electrodeposition from a chitosan–hydroxyapatite solution carried out in a cylindrical geometry. The impact of the initial concentration of solution components (i.e., chito
Externí odkaz:
https://doaj.org/article/8f12ec910ead447e93be6fb2410ede4b
Autor:
Jacek Grams, Agnieszka M. Ruppert
Publikováno v:
Catalysts, Vol 11, Iss 2, p 265 (2021)
The pyrolysis of lignocellulosic biomass is one of the most promising methods of alternative fuels production. However, due to the low selectivity of this process, the quality of the obtained bio-oil is usually not satisfactory and does not allow for
Externí odkaz:
https://doaj.org/article/88144ecffe5840b9a6690292a0b9a98d
Autor:
Marcin Jędrzejczyk, Emilia Soszka, Joanna Goscianska, Marcin Kozanecki, Jacek Grams, Agnieszka M. Ruppert
Publikováno v:
Molecules, Vol 25, Iss 22, p 5362 (2020)
The influence of the nature of carbon materials used as a support for Ru/C catalysts on levulinic acid hydrogenation with formic acid as a hydrogen source toward gamma-valerolactone was investigated. It has been shown that the physicochemical propert
Externí odkaz:
https://doaj.org/article/0818b0d928db4c74b39fce418f73be10
Autor:
Karolina A. Chalupka, Jacek Grams, Pawel Mierczynski, Malgorzata I. Szynkowska, Jacek Rynkowski, Thomas Onfroy, Sandra Casale, Stanislaw Dzwigaj
Publikováno v:
Catalysts, Vol 10, Iss 5, p 553 (2020)
A goal of this work was to investigate the influence of the preparation procedure and activation conditions (reduction temperature and reducing medium: pure hydrogen (100% H2) or hydrogen-argon mixture (5% H2-95% Ar)) on the activity of Co-containing
Externí odkaz:
https://doaj.org/article/af87cc19fccb4b19b90c05c0aaf6facc
Autor:
Jacek Grams, Robert Ryczkowski, Karolina Chałupka, Izabela Sobczak, Izabela Rzeźnicka, Kamila Przybysz
Publikováno v:
Materials, Vol 12, Iss 22, p 3792 (2019)
The main objective of this work was to evaluate an impact of a support on the efficiency of nickel catalysts in the high-temperature conversion of lignocellulosic biomass to hydrogen-rich gas. The most important parameters influencing catalytic perfo
Externí odkaz:
https://doaj.org/article/359ea4ae477b406ba7b66d49fd046415
Publikováno v:
Energies, Vol 12, Iss 18, p 3474 (2019)
Fast pyrolysis of Miscanthus, its hydrolysis residue and lignin were carried with a pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) followed by online vapor catalytic upgrading with sulfated ZrO2, sulfated TiO2 and sulfated 60 wt.% ZrO2-TiO
Externí odkaz:
https://doaj.org/article/0958df49eaed4f4cbc48a777db79a093
Publikováno v:
Materials, Vol 11, Iss 11, p 2329 (2018)
Ru/TiO2 are promising heterogeneous catalysts in different key-reactions taking place in the catalytic conversion of biomass towards fuel additives, biofuels, or biochemicals. TiO2 supported highly dispersed nanometric-size metallic Ru catalysts were
Externí odkaz:
https://doaj.org/article/635a08af99b6444580c78842dcc810f4
Autor:
Jacek Grams, Robert Ryczkowski, Renata Sadek, Karolina Chałupka-Śpiewak, Sandra Casale, Stanislaw Dzwigaj
Publikováno v:
International Journal of Hydrogen Energy. 47:34909-34923
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8082776d49ce96b177dd6dccdb40d872
https://doi.org/10.1016/j.ijhydene.2022.08.082
https://doi.org/10.1016/j.ijhydene.2022.08.082